如何将键值对添加到列表中的每个字典 [英] How to add key-value-pair to each dictionary in a list

问题描述

我必须将一个键和一个值添加到一个列表中，该列表从 csv 文件中读取到一个变量中.

I have to add a key and a value to a list which is read from a csv-file into a variable.

为了更好地解释它.首先，我从 csv 文件加载一个列表:

To explain it a bit better. First I load a list from a csv-file:

- name: Load user list from csv
  community.general.read_csv:
    path: ../files/example-prod.csv
    delimiter: ','
  register: users
  delegate_to: localhost

当我查看用户"时变量我得到以下输出:

When I look at the "users" variable I get the following output:

"list": [
        {
            "firstName": "Max",
            "gid": "2002",
            "homedir": "example",
            "lastName": "Mustermann",
            "uid": "m.example"
        },
        {
            "firstName": "Martin",
            "gid": "2002",
            "homedir": "staff",
            "lastName": "Muster",
            "uid": "martin.muster"
        }
    ]

现在我需要为列表中的所有用户生成密码.所以我想遍历项目并为列表中的每个项目添加一个新的键值对.

Now I need to generate passwords for all users in the list. So I want to loop through the items and add a new key-value-pair to each item in the list.

密码创建循环后我想要的输出是:

The output that I want after the password creation loop is:

"list": [
        {
            "firstName": "Max",
            "gid": "2002",
            "homedir": "example",
            "lastName": "Mustermann",
            "uid": "m.example",
            "password": "examplepassword"
        },
        {
            "firstName": "Martin",
            "gid": "2002",
            "homedir": "staff",
            "lastName": "Muster",
            "uid": "martin.muster",
            "password": "examplepassword"
        }
    ]

...所以我可以稍后读出变量.

...so I can read out the variables later.

如何实现?我已经阅读了很多关于如何使用字典执行此操作的内容，但由于我在这里使用的是列表，因此我找不到它.

How to accomplish this? I've read many things about how to do this with a dictionary, but since I'm using a list here, I could not find it out.

推荐答案

您实际上是从 read_csv 模块获取字典列表.list"的内容是一个列表，但是这个列表中的元素是字典.

You are actually getting a list of dictionaries from the read_csv module. The content of "list" is a list, but the elements in this list are dictionaries.

您要做的是为每个字典添加一个键值对.
这是生成随机密码的示例.有关详细信息，请参阅密码查找文档生成密码:

What you want to do is to add a key-value-pair to each dictionary.
Here is an example generating random passwords. See the password-lookup documentation on details how it generates passwords:

- set_fact:
    users: |
      {{ users.list | map('combine', { "password": "{{ lookup('password', '/dev/null chars=ascii_lowercase,digits length=8') }}"}) }}

# this resolves the template added above and is required to avoid changing passwords on each resolve of users
- set_fact:
    users: "{{ users }}"

- debug:
    msg: "{{ users }}"

说明:

• users.list 包含您的用户列表
• map('combine', <dict>) 对输入列表 (users.list) 中的每个字典运行 combine 过滤器在这种情况下)并将 的内容添加到它
• { "password": "{{ lookup('password', '/dev/null chars=ascii_lowercase,digits length=8') }}"} 是我们的字典将每个输入字典与
结合起来
• password" 是键，值是生成密码的查找

• users.list contains your list of users
• map('combine', <dict>) runs the combine filter on each dictionary in the input list (users.list in this case) and adds the contents of <dict> to it
• { "password": "{{ lookup('password', '/dev/null chars=ascii_lowercase,digits length=8') }}"} is the dictionary we combine each input-dictionary with
• "password" is the key, and the value is the lookup that is generating the password

备注:
我使用 yaml 的多行字符串文字来避免引用地狱.

Remark:
I use the multi-line string literal of yaml to avoid the quoting-hell.

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